" Ion of auxiliafy circle of Ellipse "2x^(2)+6xy+

Equation of auxillary circle of ellipse 2x^(2)+6xy+5y^(2)=1 is

Equation of the auxilary circle of the ellipse 3 x^(2)+4 y^(2)+6 x+16 y-29=0 is

If the area of the auxiliary circle of the ellipse (x ^(2))/(a ^(2)) + (y ^(2))/(b ^(2)) =1 (a gt b) is twice the area of the ellipse, then the eccentricity of the ellipse is

If the area of the auxiliary circle of the ellipse (x ^(2))/(a ^(2)) + (y ^(2))/(b ^(2)) =1 (a gt b) is twice the area of the ellipse, then the eccentricity of the ellipse is

If the area of the auxilliary circle of the ellipse (x^(2))/(a^(2)) + (y^(2))/(b^(2)) =1 (a gt b) is twice the area of the ellipse, then the eccentricity of the ellipse is

If the area of the auxillary circle of the ellipse (x^(2))/(a^(2)) + (y^(2))/(b^(2)) = 1 (a gt b) is twice the area of the ellipse, then the eccentricity of the ellipse is

The auxiliary circle of the ellipse x^(2)/25 + y^(2)/16 = 1

The auxilary circle of the ellipse 9 x^(2)+4 y^(2)=1 is

The equation of the director circle of the ellipse x^(2)+2y^(2)+2x-12y+15=0 is :